C-Grooves 'lift' the back of the ball to start it rolling forward.
The naked eye can't see it, but when a regular putter face impacts a golf ball it results in loft causing skidding, side- and even back-spinning before the ball can begin rolling forward on the green. So the ball is more apt to be affected by any miniscule aberration it encounters. Even when struck on the right line, these effects are the principal causes of missed putts. The C-Groove on every Yes! putter solves this problem better than any other putter on the market.

The secret is the 20-degree upward slant of the C-Groove's concentric edges. Upon contact, these edges grip the ball surface and apply physical forces that simultaneously lift the ball out of its resting position and impart and over-the-top rolling motion.
What happens next is changing the face of putting.

The C-Groove design has been approved by both of golf's rule-making authorities: the Royal and Ancient Golf Club of St. Andrews (R&A) and the United States Golf Association (USGA).